<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>合并两个数组，并排序</title>
</head>

<body>
  <script>
    var arr1 = [1, 5, 3, 9]
    var arr2 = [2, 7, 6]
    arr = arr1.concat(arr2)
    for (var i = 0; i < arr.length + 1; i++) {
      for (var j = 0; j < arr.length; j++) {
        if (arr[j] > arr[j + 1]) {
          var a = arr[j]
          arr[j] = arr[j + 1]
          arr[j + 1] = a;
        }
      }
    }
    console.log(arr);
  </script>
</body>

</html>